Bird-trap



L. JAKUBO'WSIG.

BIRD IRAP. APPLICATION FILED MAR'iIQ, 1919.

l ,3?4,Q l 4 Patented Apr. 5, 1921;.

LUCIAN JAKUBOWSKI, 0F`DXTER, NEW; YORK.

PATENT- italian-'.iiuir.l g

To all whom it concern: v

Be it known that'I, -LUciAN JAKUBowski, a citizen of Russia, residing at DeXter, county of J eerson, and State of New York, have inventedcertain new and' useful improvements in Bird-Traps, of which. the following is a specification.

This invention relates to improvements in traps for catching small birds, and h as as its special object the provision of a simple and effective trap whereby birds may be securely conned until manually released. n

A further object is to provide a trap comprised of few and simple parts which may be readily made and which catches'the bird without in any way doing harm to it. .l

These and other like objects are attained by the novel construction Vand combination of parts hereinafter described, and shown in the accompanying drawings, forming a material part of this disclosure, and in whichz- Figure 1 is a top plan view showing a bird trap made in accordance with the invention.

Fig. 2 is a longitudinal side elevational view thereof. Y

Fig. 3 is an end view of the saine.

Fig. 4 is an enlarged detail view2 partly in section, showing how the pins are inserted in the door posts.

The trap yconsists of a platform or baseboard 10, and top or rails 11, supported by a plurality of uprights 12, and having vertically bent plates 14 at each corner provided with vertical grooves 14a, the sides of the trap being formed by a wire netting 15, as indicated. Two traps are shown, one at each end ofthe device. l

Disposed transversely at intervals within the trap are diagonally positioned bars 16, between the center pair of which are eX- tended rods 17 Vacting as perches for the birds. Slidably fitted to the vertical corner posts 14 are doors 18 having rings 19 at their upper ends, to which are attached Cords, or similar flexible elements 20, passing between a pair of pulleys 21, rotatable on brackets 22 raised above the rails 11, the inner ends of the cords being attached to bars 23, pivoted in brackets 24, and having at their lower ends plates 25 'which with the bars are rotatably mounted upon pins 26. The plates 25 are provided in order to increase the inoment of inertia of the bars 23 about the pivots of the latter. Thus, after the pins 34 have been withdrawn from under the door .sary to rotate said v that the Specification of LettersJEatent.` v Patnted' Apk 5, 1921, Application ined MarchV 19, 191a^v s'eriai'ivazsass. 'i

18 by the weight of the bird upon the plat- 'foi-'m 30, said doorwill fall. When the door in 'falling'reaches a positionnear the base ofthe entrance, the; cords 2OV will pullu on the bars 23 Thus, the shock of the fal ing @Frist door will be lessened. By provision-of the 'A plates 25 as above-mentioned, the force necesplates -will `be greater, so greater part ofthe `,impact of the falling door will be transmitted to said! plates and absorbed in the rotation through an angle, of said plates. Therefore the door Vwill close with practically no noise which might frighten away another bird at the other end of the trap.

Disposed within the ends of the structure are relatively small platformsv 30, supported upon iiexible cords 31 pulleys 3 2 at the corners, the cords being engaged with eyes 33 secured to pins 34, normally projecting slightly into the guide posts 14, so as to support the doors 18 ina raised position.

Leading in from the entrance between the` posts 14, are inclined platforms 36, so that a bird entering may readily hop upon the surface ofv the suspended platforms 30, ythe weight of the bird overcoming the frictional resistance of the pins 34 releasing the doors 18, which drop by, gravity, confining the bird therein and obviously the bird may enter the inner compartments and rest upon the perches 17 until released.

From the foregoing it will be clear that if a bird hops onto the platform 30, its

weight will release the pins 34 supportin the door 18to the ring 19 ofL which the en passing over small of cord 2O is secured, andeXert a pull on this lcord which will turn the bar 23 down around its pivot, as the other end of the cord is 'secured tothe upper Vend of this bar. The

plate 25 will participate in this movement and retard the same, thus retardiiig also theV downward movement of the door so as to make the same almost non-perceptive in ,or-

der to allow as many birds asv may follow the first one to enter. the trap..

From the foregoing it will be seen that a i simple and inexpensive trap has been disclosed, capablel of catching small birds alive one or more of which may enter the trap any become confined therein immediately upon their alighting upon the platform .30, the

movement of which releases the pins 34 and permits the doors 18 to drop, securing'the intruder in the trap.

iio

Having thus described my invention, what v I claim as new and qdesire to seoureby Letf ters Patent, is

A device of the class described compris ing a substantially rectangular frame, ver'- Y communicating with said grooves, pins tical posts at one end of said Jframe, vertical grooves on the inner sides of said posts, a door adapted to slide vertically in zsaid grooves between said posts, eyelets on Ythe top of said door, cords attached'to saideyec lets, pulleys mounted upon the top of said frame, sald cords passing between said pulleys, a bar pivotally mounted on the top of v'said Vframe, said cords being vsecured to the vendof said.-bar, a hanging platform in said frame, cords attached to said platform, pulleys Iin said frame, said last-named cords passing over said pulleys, holes in said posts adapted to slide in said holes, eyelets on said pins, said last-named cords being attached to said last-named eyelets. f In, testimony whereof I have affixed my signature. j 

